Date: Fri, 5 Jan 1996 13:39:39 -0600 (CST) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: davidg@root.com Cc: hackers@freebsd.org Subject: Re: Machine "disappears" off the net..? Message-ID: <199601051939.NAA03022@brasil.moneng.mei.com> In-Reply-To: <199601051940.LAA00581@corbin.Root.COM> from "David Greenman" at Jan 5, 96 11:40:54 am
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> >hummin# netstat -I ed0 (*news.sol.net*) > >Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll > >ed0 1500 <Link>00.00.c0.1e.84.75 7080742 0 5956928 4503 64262 > > > >Note in particular the output error rate and relatively high collision count > > That's not a high collision rate. A "high" collision rate is 50% (one > collision on every other packet), which I sometimes see on wcarchive. The > above rate is only 1% which is far into the noise. Yes, but the router has been up for NINETY-ODD days and has seen about that many collisions, while the news server's been up for just a day or two. THAT is what I meant when I said "relatively" high... it is strange that I am seeing a rate of collisions (from hummin's point of view) that is 50x the router's rate. That does suggest to me that there is a hardware problem (my original analysis). > The output errors are a > problem, however. It really does look like you have a cabling problem of some > kind - especially if you are using thinwire. That was my original analysis, but I am then confused as to why I am not seeing input errors, and why the box is apparently able to transmit packets just fine (i.e. rwho broadcasts). The box in question IS on thinnet (so much legacy hardware :-( ) but since 10b2 is essentially a bus topology, it seems strange that the box can do one thing and not the other.. that isn't really consistent with what I've seen in the past. Which makes me very uncertain.. :-/ Particularly when I factor in the fact that the frequency of network outages coincides almost precisely with increases in network activity.... Anyways, it's all slated for replacement. With a little luck, maybe I can make it all 10bT.... and maybe the problems will go away. ... Joe ------------------------------------------------------------------------------- Joe Greco - Systems Administrator jgreco@ns.sol.net Solaria Public Access UNIX - Milwaukee, WI 414/342-4847
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